Aluminium water outlet housing – replaces plastic part – TU5JP4 / TU5J4 (behind water pump)

Increase cooling system reliability with this aluminium water outlet housing, designed for TU5JP4 and TU5J4 engines. It mounts behind the water pump, as a direct replacement for the OEM plastic part, well known for becoming fragile over time due to heat and repeated use.

By switching to an aluminium version, you remove the risk of cracking, warping or leaks associated with plastic — a real advantage for engines used in rally, on track or in a strengthened road setup.

Why upgrade to aluminium?

• Reliability: reduces leaks and prevents the OEM plastic part from breaking
• Heat resistant: better long-term durability
• Direct fit: bolts on behind the water pump
• Ideal for motorsport (rally/track) or demanding road use

Compatibility

• Engines: TU5JP4 / TU5J4
• Location: water outlet behind the water pump (replaces the OEM plastic housing)

PIKAMOTORS tip: use the replacement to check hose and thermostat condition, then fully bleed the cooling system after installation.